Shaving brush

Shaving brush

It is a Chinese idiom, Pinyin is t ī ch ō ut ū Shu ā, which means to describe the rapid rotation of eyes when in a hurry, or the appearance of looking at others carefully; it is also called "Tiqu tuchuai". It's from the back court flower.

The idiom comes from the fourth fold of "flowers in the back court" written by Zheng Tingyu in Yuan Dynasty: "don't scare him. Look at this little guy coming to Kaifeng mansion, he's so scared that his eyes and brain are all scratched."